When it comes to creatures under the influence of "Target creature you control fights target creature you don't control", are they, or the initiating creature, considered "attacking"? In my specific scenario, I played a Savage Punch, targeting my Summit Prowler and my opponent's Longshot Squad. She then played the instant Kill Shot, which reads "Destroy target attacking creature.", targeting my Prowler and therefore the stack resolves making my Savage Punch null.
So I guess all in all, does the keyword 'attacking' change this at all or was this a correct resolution?